banksy

A sexual or pseudosexual act of rejection. The rejected partner is woken in the early hours of the morning preferably whilst sleeping on white bedding and subjected to a high-pressure curry fart to the head, permanently silhouetting their shocked expression into the pillow. For a true 'banksy' one must accuse them of not getting the joke afterwards.

a sexual maneuver where you film your partner on CCTV while wearing a monkey mask and decrying the police state

bank·sy (bank see)
n.
1. A generic term for stenciled street art.
2. A general slang term for easily done street art that mimics commercial advertising.
3. A term used to describe a graffiti artist who has "sold out" by becoming financially successful through the system he originally spoke out against.

Being banksy or doing something banksy means comitting an "outrageous" act that you think is highly rebellious and counterculture but is in fact banal, sanitized and/or monetized. Quite often if you see the word "edgy" used unironically, it will be referring to a banksy act.
Comes from the street artist Banksy, whose entire portfolio can be conveniently described with this adjective.

Perhaps the greatest stencil artist ever he parades his works around Britain quite illegally. He defaces monuments, spray paints animals and generally bugs people off.

A person who smells of urine. Does not shave and hasn't showered since the revolution

A trite political statement painted on someone else's property